I don't know how the fight against kurohige crew will go if it before the final arc or in laughtale it is happen in laughtale then this crew is going pretty easy for the mugis like the hody jones pirates but if it is before there still time
Zoro has already deal easily with air invisible slashes
so in that case he won't have any trouble with Shiryu though there are still the gimmick that not even good CoO users can't detect invisibility garp was because he was experiencied in battle also Shiryu can still awaken his DF and make the fruit very broken but as I said this will happen if they are the next villains if they reach laughtale shiryu probably will get one Shot
Zoro has already deal easily with air invisible slashes
Zoro pre and after ts had delt with crazy attacks, from kuma's pound cannons to king's instant explosion. His coo and reflexes are crazy, he even move faster than luffy and blocked hakai.
You didn't need to see in order to block an attack and that was explained in the introduction of haki powers from Rayleigh.
The thing with shiryu is that he is quite dangerous and if he manage to do that to garp with a trap, i can see the same thing happen to zoro or anyone else.
Shiryu has strong coa, swordsmanship and plays no games, one mistake and you are in big trouble plus he could awaken his df like you said and be unbelievable broken.
I believe he is worthy to be Zoro's next opponent even as he is right now, that scene with garp is a crazy feat if we completely analyse it.